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23. International trade fair and Congress for Heating, Cooling and CHP

17.-19. April 2018 / Messe Frankfurt a. Main, Germany / Hall 4.2

AGFW symposium

„Pressure maintenance and system operation modes in hot water district heating systems“

 

Wednesday 18 April 2018
Halle 4, Ebene C

 

Host
Dr.-Ing. Andreas Wirths, Vattenfall Europe Wärme AG, Berlin

From 09:30
Welcome coffee

10:00
Welcome
Dr.-Ing. Andreas Wirths, Vattenfall Europe Wärme AG, Berlin

10:15
The fundamental significance of hydraulic pipe network calculations
Rolf Besier, AGFW e. V., Frankfurt

History of technical regulations

10:45
From East Germany’s TGL provisions to the upcoming revision of AGFW worksheet FW 442
Dr.-Ing. Andreas Wirths, Vattenfall Europe Wärme AG, Berlin

11:15
VDI Guideline 4708-1:2012 ‘Pressure maintenance, venting, deaeration – Part 1: Pressure maintenance’
Dr.-Ing. Karin Rühling, TU Dresden

Pressure ratios in heat distribution systems

11:45
Pressure diagrams
Rudolf Knierim, EFI Energietechnik und Fernwärme  Ingenieurbüro Knierim, Nußloch

12:15
Lunch break and visit to trade fair

13:15
Simulation of pressure changes in pipe networks
Dr.-Ing. Andreas Wolters, 3S Consult GmbH, Munich

13:45
Process-accompanying visualisation of pressure changes
Thomas Reiß, Vattenfall Europe Wärme AG, Berlin

14:15
Coffee break

Multi-phase flows – water, water vapour and gases

14:45
Theoretical and experimental analysis of the transient behaviour of hot water district heating networks during the occurrence of gas-water and vapour-water two-phase zones
Prof Dr. Achim Dittmann, Dresden
Dr Claudius Nestke, Halle

15:45
Re-condensation of vapour bubbles – tests and recommendations for system operation
Kristian Bühring,Vattenfall Europe Wärme AG, Berlin

16:15
Spontaneous condensation
Dr. Andreas Dudlik, Druckstoß Rhein Ruhr, Duisburg

16:45
Final discussion
Dr.-Ing. Andreas Wirths, Vattenfall Europe Wärme AG, Berlin

17:15
End of event

 

 

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